Ok so I just finished all the BOS units in Cambridge police station, and now I entered the vertibird to fly me towards the Prydwen. I quicksaved it before I stepped into the Vertibird. But every time Deacon starts to talk about a stealth boy that I need to use, the game crashes. It just shuts down and I have tried the quest repeatedly. Can someone help me with this? It is really annoying cause I just want my Fallout 4 to work like it is supposed to .

Any help would be appreciated.